In a land far far away in the distant past I had a mentor. My grandfather had me helping to reload under his guidance at age 7 or so. By the time I was 10 in 1968 he was telling me that I had to reload my own 30-30 and 38SPL if I wanted to shoot as much as I did. He supplied me with a limited stash of components to accomplish this task with as "pay" for helping around the dairy farm. We got to shoot plenty, cast bullets, hunt, fish, ride around on horses, drive around on tractors, race around in the fields in "woods cars"we modified by removing the doors and glass, and blow things up with either black powder or dynamite. Boy I miss growing up on the farm. One of the important things was dynamite fuse was timed at 6 seconds a foot and figure how far you needed to run for cover to be safe LOL.
Today a parent would be charged with neglect for allowing this to happen.